低温等离子体改性碳纳米管对再生沥青性能的影响

doi:10.11896/cldb.19020125

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Abstract Low temperature plasma was used to modify multi-walled carbon nanotubes (MWNTs), and the recycling agent composed with such plasma-modified-MWNTs was prepared and introduced into the aged asphalts for their juvenescence. The chemical composition of low temperature plasma modified-MWNTs and its dispersibility and compatibility with asphalt matrix was characterized by using XPS and SEM, while the modification mechanism of low temperature plasma modified-MWNTs was also discussed. FTIR and TG were employed to exam the components, thermal stabilities and aging resistances of recycled asphalts. Finally, the effects of regeneration and performances of recycled asphalts were evaluated via the penetration, softening point and ductility indexes tests. The results indicate that low temperature plasma treatment could solve the interface problem of MWNTs while introduce a large number of oxygen-containing functional groups on the surface, which improves the dispersion of MWNTs and the binding between MWNTs and asphalt matrix. Therefore, the mechanical properties of recycled asphalt are greatly improved. At the same time, MWNTs can absorb part of the oil in the recycling agent and play a sustained-release role, which better overcomes the problem that asphalt ages at a high rate due to the rapid loss of oil within the traditional recycling agent. Therefore, it can effectively improve the anti-aging performance while improving the comprehensive performance of recycled asphalt.

Key words： carbon nanotubes asphalt regeneration low temperature plasma modification treatment performance

Published: 03 January 2020

CLC number:

U416

About author:: Guolin Songgraduated from the Department of Color Science and Polymer Chemistry at the University of Leeds in November 2006 with a Ph.D degree. From October 2006 to April 2008, he worked at the UK Di-gital Printing Industry Cooperation Center. In May 2008, he entered Tsinghua University to carry out postdoctoral research work. He has been appointed to the Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University since accomplishment of his postdoctoral work in 2010. His most recent research interests include low-temperature plasma modification technology, MOFs, phase change materials and energy storage technology, metal material external field processing and surface strengthening technology, light metal composite structure, biomass resource recycling, biodegradable materials, high-efficiency electret filtration technology and so on. He has published more than 50 papers, and applied for more than 40 patents, including 26 national invention patents. He was also awarded the second prize of Science and Technology of China Machinery Industry; the first prize of Shenzhen Natural Science and the second
prize of Shenzhen Science and Technology Progress. He is a leading talent in Shenzhen and a high-level overseas talent for Peacock.

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	SONG Guolin
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Cite this article:

SONG Guolin,ZHANG Ze,SHEN Chengzhu, et al. Effect of Low Temperature Plasma Modified-carbon Nanotubes on Performance of Recycled Asphalt[J]. Materials Reports, 2020, 34(2): 2052-2057.

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http://www.mater-rep.com/EN/10.11896/cldb.19020125 OR http://www.mater-rep.com/EN/Y2020/V34/I2/2052

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